I'm thinking of making or constructing some sort of pole for my 5D2 to enable me to push it out horizontally over cliffs, waterfalls and out of buildings to obtain some unusual angles for my still photography. Obviously polecam photography with a 5D2 will be a little more difficult due to the weight of the camera and 24-105L combination. I would have no qualms about doing it if I were holding the pole vertically but when pushing the pole out horizontally there will be much more stress on the pole. I intend to take the shots using the tethered shooting function of the EOS software and a long USB lead linked to my Macbook. I'm just wondering if any of you have done this sort of thing before with a DSLR and if you have any tips, ideas or advice. So far, my idea for the choice of pole is a long (5 metre / 17ft) fibreglass painters extension pole. I don't want anything too heavy to carry around but it must obviously be strong enough for the task.